Pixels and proportions solve different problems
An image that is 2400 pixels wide and 1600 pixels high has a 3:2 aspect ratio. Reducing it to 1200 × 800 keeps that ratio, so shapes look the same. Forcing it into 1200 × 1200 by stretching would make circles oval and faces taller. A square output needs a deliberate choice: remove some of the scene or add empty space.
Use a proportional resize for the same composition
Enable Maintain aspect ratio and enter a new width. The height follows the original proportions. This is useful for email attachments, website photos and images that already have the right shape. Always start with the original. Repeatedly resizing and saving JPG copies can accumulate visible artifacts. A single export from the source avoids unnecessary generations.
Use Fit when the whole image matters
Fit scales the full source inside the requested canvas. A landscape image inside a square has padding above and below it. Choose a background that looks intentional. PNG or WebP can preserve transparent padding; JPG needs a solid background. Fit is helpful for artwork, product packaging and screenshots whose edges contain information.
Use Fill when the frame must be covered
Fill scales until the canvas is covered, then crops the overflow. Move the focus controls to choose what stays visible. A 3:2 landscape cropped to a square loses about one third of its width at the same height. Before exporting, check faces, hands, product labels and any text near the edges.
A repeatable check before downloading
Pick the intended destination size, preview the whole composition, then inspect the result at its native scale. The preview on a phone may hide blur that appears on a desktop. Upscaling makes more pixels but cannot reconstruct detail that was never captured. If the source is too small, seek a larger original or use a smaller output.
Ready to try it?
Choose a source image and compare the result in your browser.
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